Question

我有两个viewController，所以我希望第一个viewController可以旋转所有侧面，第二个viewController只能旋转左侧。这是我在第二个viewController中的代码。非常感谢你。

-(NSUInteger) supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeLeft;
}

Answer 1

如果您使用的是navigationController，创建一个这样的类别，

  @interface UINavigationController (Rotation_IOS6)

    @end

    @implementation UINavigationController (Rotation_IOS6)

    -(BOOL)shouldAutorotate
    {
        if([self.visibleViewController isMemberOfClass:NSClassFromString(@"SecondViewController")])
        {
            return UIInterfaceOrientationMaskLandscapeLeft
        }
        return NO;
    }

    - (NSUInteger)supportedInterfaceOrientations
    {
        return [[self topViewController] supportedInterfaceOrientations];
    }

    - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
    {
        if([self.visibleViewController isMemberOfClass:NSClassFromString(@"SecondViewController")])
        {
            return UIInterfaceOrientationMaskLandscapeLeft
        }
        return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
    }

@end

Answer 2

- (BOOL)shouldRotateToOrientation:(UIDeviceOrientation)orientation {
  if (orientation == UIDeviceOrientationLandscapeLeft) {
    return NO;
  }
  else if (orientation == UIDeviceOrientationLandscapeRight) {
    return NO;
  }
 else if (orientation == UIDeviceOrientationPortrait) {
    return NO;
  }
 else if (orientation == UIDeviceOrientationPortraitUpsideDown) {
    return YES;
  }
}

//使用此方法检查要执行的方向，如果是，则可以返回no //想要停止方向，如果你返回是，那么方向执行

Answer 3

首先，您需要添加NavigationController的类别

声明AppDelegate中的bool用于所有的projcet。

声明属性AppDelegate.h

@property BOOL * islandscape;

AppDelegate.m文件

@synthesize islandscape;

.h文件

#import <UIKit/UIKit.h>
#import "AppDelegate.h"

@interface UINavigationController (orientation1)

@end

.M文件

#import "UINavigationController+orientation1.h"

@implementation UINavigationController (orientation1)

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{

    AppDelegate * delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];

    if (delegate.islandscape)
    {
        // for iPhone, you could also return UIInterfaceOrientationMaskAllButUpsideDown
        return UIInterfaceOrientationMaskLandscape;

    }
    return UIInterfaceOrientationMaskPortrait;
}

@end

然后在SeconViewController中使用那个bool varible。

delegate.islandscape=Yes;

supportedInterfaceOrientation不起作用

3 个答案: